package com.erci.interceptor;


import cn.hutool.core.bean.BeanUtil;
import cn.hutool.core.util.StrUtil;
import com.erci.constant.JwtClaimsConstant;
import com.erci.entity.UserLocal;
import com.erci.entity.VO.UserPhoneVO;
import com.erci.properties.JwtProperties;
import com.erci.utils.JwtUtil;
import com.erci.utils.UserHolder;
import io.jsonwebtoken.Claims;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.web.method.HandlerMethod;
import org.springframework.web.servlet.HandlerInterceptor;

import java.util.Map;
import java.util.concurrent.TimeUnit;

public class RefreshInterceptor implements HandlerInterceptor {
    private StringRedisTemplate stringRedisTemplate;
    private JwtProperties jwtProperties;
    public RefreshInterceptor(StringRedisTemplate stringRedisTemplate , JwtProperties jwtProperties) {
        this.stringRedisTemplate = stringRedisTemplate;
        this.jwtProperties = jwtProperties;
    }
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {

        //1 获取请求头中的 token
        String token = request.getHeader("Authorization");
        if(StrUtil.isBlank( token)){

            return true;
        }
        System.out.println( "请求头中token有了");

        // 方式1: 直接从JWT解析（更高效）

        Claims claims = JwtUtil.parseJWT(jwtProperties.getAdminSecretKey(), token);
        Integer userId = (Integer) claims.get(JwtClaimsConstant.EMP_ID);
        System.out.println("用户ID: " + userId);


        //2 基于token获取redis中的用户
        Map<Object, Object> userMap = stringRedisTemplate.opsForHash()
                .entries("login:token:" +userId );
        //3 判断用户是否存在
        if (userMap.isEmpty()) {

            return true;
        }
        //5 将查询到的hash数据转为UserDTO
        UserLocal userLocal = BeanUtil.fillBeanWithMap(userMap, new UserLocal(), false);

        //6 存在，放行 保存用户信息到ThreadLocal
        UserHolder.saveUser(userLocal);
        //7 刷新token有效期
        stringRedisTemplate.expire("login:token:" + userId,
                36000L, TimeUnit.MINUTES);
        //8 放行
        return true;
    }

    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
        UserHolder.removeUser();
    }
}
